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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: ResourceReaderFactoryBean.html 689 2013-06-28 19:22:16Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.spring;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.io.IOException;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.io.InputStream;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.io.InputStreamReader;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.io.StringWriter;<a name="line.13"></a>
<span class="sourceLineNo">014</span><a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.springframework.beans.factory.config.AbstractFactoryBean;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.springframework.core.io.Resource;<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>/**<a name="line.18"></a>
<span class="sourceLineNo">019</span> * Spring factory bean that reads in a Spring {@link Resource} and converts it to a {@link String}.<a name="line.19"></a>
<span class="sourceLineNo">020</span> */<a name="line.20"></a>
<span class="sourceLineNo">021</span>public class ResourceReaderFactoryBean extends AbstractFactoryBean&lt;String&gt; {<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>    private Resource resource;<a name="line.23"></a>
<span class="sourceLineNo">024</span>    private String charset = "UTF-8";<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>    /**<a name="line.26"></a>
<span class="sourceLineNo">027</span>     * Configure the resource containing the {@link String value}.<a name="line.27"></a>
<span class="sourceLineNo">028</span>     */<a name="line.28"></a>
<span class="sourceLineNo">029</span>    public void setResource(Resource resource) {<a name="line.29"></a>
<span class="sourceLineNo">030</span>        this.resource = resource;<a name="line.30"></a>
<span class="sourceLineNo">031</span>    }<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>    /**<a name="line.33"></a>
<span class="sourceLineNo">034</span>     * Configure the character encoding for the resource. Default is {@code UTF-8}.<a name="line.34"></a>
<span class="sourceLineNo">035</span>     */<a name="line.35"></a>
<span class="sourceLineNo">036</span>    public void setCharacterEncoding(String charset) {<a name="line.36"></a>
<span class="sourceLineNo">037</span>        this.charset = charset;<a name="line.37"></a>
<span class="sourceLineNo">038</span>    }<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>    @Override<a name="line.40"></a>
<span class="sourceLineNo">041</span>    public Class&lt;String&gt; getObjectType() {<a name="line.41"></a>
<span class="sourceLineNo">042</span>        return String.class;<a name="line.42"></a>
<span class="sourceLineNo">043</span>    }<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>    @Override<a name="line.45"></a>
<span class="sourceLineNo">046</span>    public void afterPropertiesSet() throws Exception {<a name="line.46"></a>
<span class="sourceLineNo">047</span>        super.afterPropertiesSet();<a name="line.47"></a>
<span class="sourceLineNo">048</span>        if (this.resource == null)<a name="line.48"></a>
<span class="sourceLineNo">049</span>            throw new Exception("no resource configured");<a name="line.49"></a>
<span class="sourceLineNo">050</span>    }<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span>    @Override<a name="line.52"></a>
<span class="sourceLineNo">053</span>    protected String createInstance() throws IOException {<a name="line.53"></a>
<span class="sourceLineNo">054</span>        InputStream input = this.resource.getInputStream();<a name="line.54"></a>
<span class="sourceLineNo">055</span>        try {<a name="line.55"></a>
<span class="sourceLineNo">056</span>            InputStreamReader reader = new InputStreamReader(input, this.charset);<a name="line.56"></a>
<span class="sourceLineNo">057</span>            StringWriter writer = new StringWriter();<a name="line.57"></a>
<span class="sourceLineNo">058</span>            char[] buf = new char[4096];<a name="line.58"></a>
<span class="sourceLineNo">059</span>            int r;<a name="line.59"></a>
<span class="sourceLineNo">060</span>            while ((r = reader.read(buf)) != -1)<a name="line.60"></a>
<span class="sourceLineNo">061</span>                writer.write(buf, 0, r);<a name="line.61"></a>
<span class="sourceLineNo">062</span>            return writer.toString();<a name="line.62"></a>
<span class="sourceLineNo">063</span>        } finally {<a name="line.63"></a>
<span class="sourceLineNo">064</span>            try {<a name="line.64"></a>
<span class="sourceLineNo">065</span>                input.close();<a name="line.65"></a>
<span class="sourceLineNo">066</span>            } catch (IOException e) {<a name="line.66"></a>
<span class="sourceLineNo">067</span>                // ignore<a name="line.67"></a>
<span class="sourceLineNo">068</span>            }<a name="line.68"></a>
<span class="sourceLineNo">069</span>        }<a name="line.69"></a>
<span class="sourceLineNo">070</span>    }<a name="line.70"></a>
<span class="sourceLineNo">071</span>}<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>




























































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